Update: The Quadra was on sale for $75, so I decided to bite the bullet and go for it. I brought it home, opened it up, and found a Daystar PowerPro 601 accelerator inside! I believe it is the 100MHz model. I also found a good SuperMac video card as well. The only problem with this unit is that I get no picture through both the graphics card and built in video. There's a startup chime followed immediately by a death chime, and then the machine seems to boot up normally, except for the blank screen.